Download OS to PC. Use Internet Explorer, not Firefox or Chrome. (For leaked versions, browser is irrelevant.)
*If 100% certain you've previously used FF or Chrome on same PC to DL an OS successfully, feel free to use FF or Chrome again.

Following successful DL, run OS file to install OS on PC.

On BB, go to BBM Options, scroll down to Backup section. Ensure Remote Backup is enabled AND also conduct a Local Backup to media card.

Go through any 3rd party apps with option to save settings to media card. Conduct Backup to media card within each of these apps. (Examples: Bellshare apps like BerryBuzz & BerryWeather; QuickLaunch; Shao's apps like Wallpaper Changer & SixTools; etc).

Connect BB to PC. Open DM and backup device. Close DM.

(Optional) Use desktop app like BBSAK or BBMCP to backup 3rd party apps.

Hi,
I have BB 9360 with OS 7 , After update to OS 7.1 I could not write in Arabic.
I found this way to install Arabic
Very easy.
1-install JL_cmder
-If Windows 8 right click install then choose Run As Administrator

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